Machine for converting motion



. (NoModel.) W- BK MUNGER.

MACHINE @0R GONVERTING MOTION. No. 262,685. Patented Aug. 15, 1882.

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WILLIAM B. MUNGER, 0F OBERLIN, OHIO,

MACHINE FOR CONVERTING IVIOTION.l

SPECIFICATION forming part of Letters Patent No. 262,685, dated .August 15, 1882.

(No model.)

To all whom it may concern:

Beit known that I, WM. B. MUNGER, a citizen of the United States, residing at Oberlin, in the county ofLorain and State of Ohio, have invented a'new and useful machine for the conversion of motion from rotary to reci procating, and the reverse, of which the following is a specification.

My invention relates to improvements in machines for changing rotary to reciprocating motion, or the reverse, in which reciprocating racks are moved simultaneously in opposite directions, operated by a single pinion; and the objects of my improvement are, rst, the easy and certain transfer of the racks to opposite sides of the pinion at the end of each stroke; second, the securing of the racks to the pinion without slipping of cogs in any part ot the stroke; and, third, to save the loss of power from oblique action and too great leverage. I attain these objects by the mechanism illustrated in the aecompanyin g drawings, in which similar letters refer to similar parts throughout the several views.

Figure 1 is a perspective view of the entire machine. Fig. 2 is a perspective view of one ofthe essential parts of the machine, a frame with rack-teeth on both its inner edges and at the ends. Fig. 3 is the pinion and shaft to which power is applied in changing rotary to reciprocating motion. Fig. 4 shows the pinion engaged with the rack at the moment when the rack has run its length.

The rack, Fig. 2, consists of a frame, C C, whose length is about three and one-half times its breadth, having cogs cut on both of its inner edges and at least two sharper-edged cogs at each end. Each machine has two such racks. The frame is backed by a plate of metal, A A, extending in width beyond the frame a distance equal to the length of a cog, and carrying on each of its outer edges a wing or guide, W W. A groove is thus left on each side of the frame between the frame G C and the guide W W, into which the guide of another rack similar in all respects to the one described will exactly tit if placedt'ace to face upon it. A wing of each rack will tit in the corresponding groove of the other rack.

Fig. 3 shows the shaft and pinion, the axial length of the latter being double the thickness ofthe frame of either rack, or long enough to receive the teeth of both racks when in position. The diameter of the pinion, including the cogs, isjust sufficient to allow the pinion to be 55 engaged with the teeth on one side of the frame and not to touch those on the other side.

When all the parts are in position, as in Fig.

1, the pinion I is inclosed, as in a box, the shaft S S protruding through a slot cut in the back- 6o ing A A. rlhe guide W moves in the groove between the guide IV W and the frame U G. A right-handed revolution ot the pinion would now carry the frame A A upward and the frame C C downward unt-il the end of each 65 frame touches the pinion, when instantly the frame A A', by a small lateral movement to the left, and the frame C C, by an equal movement to the right, will be in position to make the contrary stroke. The guide W would then 7o descend outside the guide W W, the latter taking the groove between W and its frame.

Fig. 4 shows how the lateral movement ot' the two racks is secured. Left-handed revolution ot' the pinion I on a fixed axis would 75 throw the frame C to the left and engage the rack at d. Right-handed revolution, on the contrary, would move the frame upward, the guides W and IV W always holding the racks in gear with the pinion in ascending or de- 8o scendng.

The guides G G, Fig. l, or an equivalent device, serve to hold the frames together and prevent them from sliding on the pinion iu the direction of the axis.

rIhe lugs B B or an equivalent device is necessary for attaching the machine to the weight to be moved-o. g., in pumping water from a. well bynneans of a wind or steam motor.

The accompanying drawings are intended to 9o represent a machine which shall reverse the direction ofthe racks at the end of each complete revolution of the pinion.

In a machine for running a metal-planer or doing other work where great length of stroke 95 is required the rack can be ot' any desired length as compared with the circumference of lthe pinion, and when the object of the machine is to convert reciprocating motion to rotary the pinion may he of greater circumference roo than the length ofthe rack.

WVhat I claim as my invention, and desire to secure by Letters Patent, is-

1. The double rack geared to a single pinion so as to Work simultaneously on opposite the pinion, substantially as described, and for ro sides of it, substantially as described, and for the purpose set forth. the purpose set forth. 4. The combination of the self-adjusting 2. The two oogs at each end of each rack, racks, pinion, and guides, substantially as de- 5 formed and spaced as described, and for the scribed, and for the object set forth.

purpose of producing lateral motion of the WM. B. MUNGER. racks, substantially as set forth. Witnesses:

3. The Wings or guides automatically ad- P. G. AKERS, justed, holding the racks always in gear with FRED WEBSTER. 

